409564491043 has 2 divisors, whose sum is σ = 409564491044. Its totient is φ = 409564491042.

The previous prime is 409564491023. The next prime is 409564491067. The reversal of 409564491043 is 340194465904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409564491043 is a prime.

It is not a weakly prime, because it can be changed into another prime (409564491013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204782245521 + 204782245522.

It is an arithmetic number, because the mean of its divisors is an integer number (204782245522).

Almost surely, 2^409564491043 is an apocalyptic number.

409564491043 is a deficient number, since it is larger than the sum of its proper divisors (1).

409564491043 is an equidigital number, since it uses as much as digits as its factorization.

409564491043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 409564491043 in words is "four hundred nine billion, five hundred sixty-four million, four hundred ninety-one thousand, forty-three".